com.continuuity.loom.codec.json.current.TakeTaskRequestCodec.java Source code

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Here is the source code for com.continuuity.loom.codec.json.current.TakeTaskRequestCodec.java

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/*
 * Copyright 2012-2014, Continuuity, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.continuuity.loom.codec.json.current;

import com.continuuity.loom.http.request.TakeTaskRequest;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;

import java.lang.reflect.Type;

/**
 * Codec for deserializing a {@link TakeTaskRequest}. Used to make sure required fields are present.
 */
public class TakeTaskRequestCodec implements JsonDeserializer<TakeTaskRequest> {

    @Override
    public TakeTaskRequest deserialize(JsonElement json, Type type, JsonDeserializationContext context)
            throws JsonParseException {
        JsonObject jsonObj = json.getAsJsonObject();

        String workerId = context.deserialize(jsonObj.get("workerId"), String.class);
        String provisionerId = context.deserialize(jsonObj.get("provisionerId"), String.class);
        String tenantId = context.deserialize(jsonObj.get("tenantId"), String.class);

        return new TakeTaskRequest(workerId, provisionerId, tenantId);
    }
}